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anx_import.h

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00001 /* 00002 Copyright (C) 2003 Commonwealth Scientific and Industrial Research 00003 Organisation (CSIRO) Australia 00004 00005 Redistribution and use in source and binary forms, with or without 00006 modification, are permitted provided that the following conditions 00007 are met: 00008 00009 - Redistributions of source code must retain the above copyright 00010 notice, this list of conditions and the following disclaimer. 00011 00012 - Redistributions in binary form must reproduce the above copyright 00013 notice, this list of conditions and the following disclaimer in the 00014 documentation and/or other materials provided with the distribution. 00015 00016 - Neither the name of CSIRO Australia nor the names of its 00017 contributors may be used to endorse or promote products derived from 00018 this software without specific prior written permission. 00019 00020 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00021 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00022 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00023 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ORGANISATION OR 00024 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00025 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00026 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 */ 00032 00033 #ifndef __ANX_IMPORT_H__ 00034 #define __ANX_IMPORT_H__ 00035 00036 #include <annodex/anx_types.h> 00037 #include <annodex/anx_core.h> 00038 00067 typedef struct _AnxImporter AnxImporter; 00068 00072 typedef struct _AnxSourceTrack AnxSourceTrack; 00073 00078 typedef struct _AnxSource AnxSource; 00079 00092 typedef AnxSource* (*AnxImporterOpenFunc) (const char * path, const char * id, 00093 int ignore_raw, 00094 double start_time, double end_time, 00095 AnxImportCallbacks * import_callbacks); 00096 00110 typedef AnxSource * (*AnxImporterOpenFDFunc) (int fd, const char * id, 00111 int ignore_raw, 00112 double start_time, double end_time, 00113 AnxImportCallbacks * import_callbacks); 00114 00122 typedef long (*AnxImporterReadFunc) (AnxSource * source, unsigned char * buf, 00123 long n, long bound); 00124 00130 typedef long (*AnxImporterSizeofNextReadFunc) (AnxSource * source, long bound); 00131 00136 typedef int (*AnxImporterCloseFunc) (AnxSource * source); 00137 00138 struct _AnxImporter { 00139 AnxImporterOpenFunc open; 00140 AnxImporterOpenFDFunc openfd; 00141 AnxImporterCloseFunc close; 00142 AnxImporterReadFunc read; 00143 AnxImporterSizeofNextReadFunc sizeof_next_read; 00144 char * content_type; 00145 }; 00146 00147 struct _AnxSourceTrack { 00148 char * id; 00149 char * content_type; 00150 long nr_header_packets; 00151 anx_int64_t granule_rate_n; 00152 anx_int64_t granule_rate_d; 00153 anx_int64_t start_granule; 00154 anx_int64_t end_granule; 00155 anx_int64_t current_granule; 00156 int eos; 00157 }; 00158 00159 struct _AnxSource { 00160 AnxImporter * importer; 00161 AnxList * tracks; 00162 AnxSourceTrack * current_track; /* points within tracks, 00163 managed by importer */ 00164 00165 int eos; 00166 double start_time; 00167 double end_time; 00168 void * custom_data; 00169 }; 00170 00171 #ifdef __cplusplus 00172 extern "C" { 00173 #endif 00174 00180 int anx_importer_register (AnxImporter * importer); 00181 00187 int anx_importer_unregister (AnxImporter * importer); 00188 00189 #ifdef __cplusplus 00190 } 00191 #endif 00192 00193 #endif /* __ANX_IMPORT_H__ */

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